@misc{indiciaebe3d94bc8a19,
  title = {Space science. Human flight is next step for China's space program.},
  author = {Ding Yimin and Dennis Normile},
  year = {2003},
  doi = {10.1126/science.299.5604.180a},
  url = {https://pubmed.ncbi.nlm.nih.gov/12522219/},
  note = {Source identifier: 12522219}
}